Effects of Hydrogen Gas Environment on Non-Propagation Phenomena of a Type 304 Austenitic Stainless Steel

Y. Aoki; T. Matsuyama; Yasuji Oda; Kenji Higashida; Hiroshi Noguchi

doi:10.4028/www.scientific.net/KEM.297-300.927

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 297-300Effects of Hydrogen Gas Environment on...

Effects of Hydrogen Gas Environment on Non-Propagation Phenomena of a Type 304 Austenitic Stainless Steel

Abstract:

In order to investigate the hydrogen gas effect on non-propagation phenomena of a type 304 austenitic stainless steel, fatigue tests with in-situ observation using a Scanning Laser Microscope were performed in air, in 0.18MPa hydrogen gas and in 0.18MPa nitrogen gas. A nonpropagating crack was observed during the fatigue test in air. At almost the same stress level of non-propagating in air, non-propagating cracks were also observed in fatigue tests in hydrogen and in nitrogen. Stress level of the non-propagation is not sufficiently different in the three environments. However, the process up to non-propagation differs from each other, for example, the crack path and debris.

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Periodical:

Key Engineering Materials (Volumes 297-300)

Pages:

927-932

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.297-300.927

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Online since:

November 2005

Authors:

Y. Aoki, T. Matsuyama, Yasuji Oda, Kenji Higashida, Hiroshi Noguchi

Keywords:

Austenitic Stainless Steel, Fatigue, Hydrogen Embrittlement, Non-Propagating Crack

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